Lost: Season 6 - Eps 1&2: LAX Episode Guide

Jack gets up and goes back to the bathroom himself. When Jack returns to his seat, he finds another man sitting there. It's Desmond, but these two men don't know each other. They're strangers. Desmond apologizes and says the man next to him has been snoring since they left Sydney. Wait – Desmond got on the plane at Sydney? The stewardess told him the seat wasn't taken, and he asks if it's okay if he sits there. Jack's says sure and slides into his seat, studying the strangely familiar man. Desmond asks if something is wrong, and Jack asks if they know each other from somewhere. Desmond says he's not sure.